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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Corrosion and anodizing behaviour of friction stir weldment of AA2198-T851 Al-Cu-Li alloy

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Author(s):
Donatus, Uyime [1] ; Ferreira, Raphael Oliveira [2] ; Mogili, Naga Vishnu Vardan [3] ; Goncalves de Viveirosa, Barbara Victoria [1] ; Milagre, Mariana Xavier [1] ; Costa, Isolda [1]
Total Authors: 6
Affiliation:
[1] Inst Pesquisas Energet & Nucl, Av Prof Lineu Prestes 2242, Sao Paulo, SP - Brazil
[2] Univ Sao Paulo, Escola Politecn, Av Prof Mello Moraes 2463, Sao Paulo, SP - Brazil
[3] CNPEM, Lab Nacl Nanotecnol LNNano, Rua Giuseppe MaximoScolfaro 10-000, BR-13083100 Campinas, SP - Brazil
Total Affiliations: 3
Document type: Journal article
Source: Materials Chemistry and Physics; v. 219, p. 493-511, NOV 1 2018.
Web of Science Citations: 3
Abstract

Anodizing behaviour of AA2198-T851 friction stir weldment and the corrosion behaviour of unpolished and polished weldments of the alloy have been investigated. Electrochemical and microscopic techniques were employed in the study. The results revealed that the manufacturing-process induced near-surface deformed layer significantly affected the corrosion behaviour of the weldment. Thus, the corrosion behaviour of the weldment in the polished condition (which is the common practice) was different from that of the unpolished one due to the presence of near-surface deformed layer. Anodizing as a corrosion protection method for the weldment caused the formation of pronounced non-uniform oxide layer thicknesses across the weld zones. This was because the weldment oxidized at a higher rate compared with the parent material (PM) due to an increased proportion of Li in solid solution in the stir zone of the weldment. (AU)

FAPESP's process: 13/13235-6 - Investigation on the localized corrosion and the fatigue corrosion resistance of high strength aluminum alloys joined by friction stir welding (FSW)
Grantee:Isolda Costa
Support Opportunities: Research Projects - Thematic Grants
FAPESP's process: 17/03095-3 - Investigation on corrosion susceptibility of Al-Cu-Li alloys by friction stir welding (FSW) through scanning vibrating electrode technique (SVET)
Grantee:Uyime Donatus
Support Opportunities: Scholarships in Brazil - Post-Doctoral